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Thread: 1957 chevrolet 4 barrel intakes early 3731398 and late 3746829

  1. #1
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    1957 chevrolet 4 barrel intakes early 3731398 and late 3746829

    I have been trying to find a good correct date coded original 4 barrel intake manifold for my 1957 Chevrolet . The front assemble stamp date is F8I3F this breaks down to F= Flint Assemble plant, 8= August, 13th, and F= 283 2barrel w/ Power-glide.All cast numbered parts should be 1to 10 days prior to this assembly date. Since I am upgrading to a stock 4 barrel set up, I have noticed that all stock 4 barrel intakes that I have seen with a cast date as late as G267 or July26th 1957 have the part number 3731398 and I have seen one with a casting date of H87 or August ,8th 1957 This one has a part number of 3746829 and I guess was only used for the last month of production for 1957. Page 683 of the Danchuk parts catalog confirms this. This intake manifold part number 3746829 was used right into 1959 so it dose get confusing .
    Last edited by nomad; 09-26-2020 at 10:47 AM.

  2. #2
    Registered Member BamaNomad's Avatar
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    That engine is more likely to be an early (1956 Aug) than a late one isn't it? What is your VIN? early or late? I think by August of '57, they were probably building '58 models...

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    I have a 3731398 4 BBL intake, believe it is dated late April if you would have an interest in it. Would have to check the date code to be sure. Being cast iron not sure about shipping $$ but it is possible.

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    I know it has been awhile but thought I would see if you got your manifold. I am reviving a 57 150 that was parked for 40 years. It has the manifold you were looking for with the August 8th, 1957 date. I was looking it up to see why it was on my car but listed for 58-61 cars. Our cars were both obviously late builds in the model year. Have the Rochester off it, too.

  5. #5
    Registered Member BamaNomad's Avatar
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    Nomad wrote: "This one has a part number of 3746829 and I guess was only used for the last month of production for 1957. Page 683 of the Danchuk parts catalog confirms this. This intake manifold part number 3746829 was used right into 1959 so it dose get confusing . "
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    The '829' intake is listed for 1958 thru 1961 Corvettes with single 4-bbl. I doubt seriously if they ever installed one on a '57 Chevrolet. I suspect a previous owner upgraded their engine to a 4-bbl using a Corvette intake. To be correct for a '57, you need the '398' intake manifold. What is the casting date on your engine block and heads? And what is the stamping on the engine?

  6. #6
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    Quote Originally Posted by BamaNomad View Post
    Nomad wrote: "This one has a part number of 3746829 and I guess was only used for the last month of production for 1957. Page 683 of the Danchuk parts catalog confirms this. This intake manifold part number 3746829 was used right into 1959 so it dose get confusing . "
    -------------------------------------------------------------------

    The '829' intake is listed for 1958 thru 1961 Corvettes with single 4-bbl. I doubt seriously if they ever installed one on a '57 Chevrolet. I suspect a previous owner upgraded their engine to a 4-bbl using a Corvette intake. To be correct for a '57, you need the '398' intake manifold. What is the casting date on your engine block and heads? And what is the stamping on the engine?
    I will have to check out the engine numbers and the build date on the car itself. 60 year old car with multiple owners means anything is possible. The car came with a 327/365 rebuilt short block in the trunk. Sold that to a friend.

  7. #7
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    Now the 365hp 327 that is cool.

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